Magnezone @ Leftovers  
Ability: Levitate  
Tera Type: Electric  
EVs: 160 HP / 252 SpD / 96 Spe  
Calm Nature  
- Volt Switch  
- Echo Chamber  
- Rebuild  
- Rapid Spin

Magnezone is a great thundy-i counter, not only does it take minimal damage from knock off -> u-turn, thunderbolt, and almost any coverage aside from focus blast, it can rebuild to recover its hp and take advantage of that opportunity to spin or to pivot into another teammate